Adhesive strength of posterior biological restorations submitted to microtraction

Lilian Capanema Nogueira; Larissa Doalla de Almeida e Silva; Nayara Kelly Lyrio Ferraz; Karine Taís Aguiar Tavano; Adriana Maria Botelho

doi:10.17765/2176-9206.2026v19e13378

Authors

Lilian Capanema Nogueira Universidade Federal dos Vales do Jequitinhonha e Mucuri https://orcid.org/0000-0001-6083-2552
Larissa Doalla de Almeida e Silva Universidade Federal dos Vales do Jequitinhonha e Mucuri https://orcid.org/0000-0002-8705-9288
Nayara Kelly Lyrio Ferraz Universidade Federal dos Vales do Jequitinhonha e Mucuri https://orcid.org/0000-0002-0779-3600
Karine Taís Aguiar Tavano Universidade Federal dos Vales do Jequitinhonha e Mucuri https://orcid.org/0000-0002-8381-408X
Adriana Maria Botelho Universidade Federal dos Vales do Jequitinhonha e Mucuri https://orcid.org/0000-0002-6978-796X

DOI:

https://doi.org/10.17765/2176-9206.2026v19e13378

Keywords:

Adhesion, Dental Restoration Wear, Mechanical stress

Abstract

This study evaluated the adhesive strength of biological restorations compared to conventional porcelain restorations through a microtraction test and fracture areas evaluation. 24 recently extracted and planed third molar crowns were randomly divided into a control (n = 12; porcelain restorations) and an experimental group (n = 12, biological restorations). Biological restorations were made from fragments of the teeth andporcelain crowns with the same dimensions using composite resin. After 24 hours, the teeth were submitted to thermal cycles and to microtraction. Fracture analysis was performed with a stereoscopic magnifying glass; samples were characterized by SEM. Data analysis was performed with the Student’s t-test and the chi-squared test (p ? 0.05). A significant difference was found regarding the type of fracture (p = 0.015), with adhesive fracture rate of 75% in the experimental group. Biological restorations constitute a viable option for the re-establishment of function and esthetics on posterior teeth.

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Author Biographies

Lilian Capanema Nogueira , Universidade Federal dos Vales do Jequitinhonha e Mucuri

Graduated in Dentistry from the Federal University of Vales and Jequitinhonha and Mucuri (2011) - Diamantina - MG. Master in Dentistry, area of concentration in Clinical Dentistry (UFVJM) (2014). PhD in Dentistry in the area of concentration in Clinical Dentistry from the Federal University of Minas Gerais (UFMG) (2018). Dentist and Coordinator of Oral Health in the Family Health Program (PSF), Sister Gertrudes, Conceição do Pará (MG).

Larissa Doalla de Almeida e Silva, Universidade Federal dos Vales do Jequitinhonha e Mucuri

She holds a degree in Dentistry from the Federal University of Jequitinhonha and Mucuri Valleys - JK Campus (2017), a master's degree in DENTISTRY from the Federal University of Jequitinhonha and Mucuri Valleys - JK Campus (2019) and a PhD in DENTISTRY from the Federal University of Jequitinhonha and Mucuri Valleys - JK Campus (2024). She is currently a primary care dentist at the City Hall of Diamantina, MG. She has experience in the area of Dentistry, with an emphasis on Clinical Dentistry, working mainly on the following topics: oral pathology, stomatology, oral cancer and ozone therapy.

Nayara Kelly Lyrio Ferraz, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Graduated in Dentistry from the Federal University of Jequitinhonha and Mucuri Valleys (2011) - Diamantina - MG Master in Dentistry in the postgraduate course PPGOdonto UFVJM (2014) Doctor in Dentistry in the area of concentration of Dental Clinic from the Federal University of Minas Gerais (UFMG) (2018) Dental Prosthesis Technician at the Federal University of Jequitinhonha and Mucuri Valleys (2018-)

Karine Taís Aguiar Tavano, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Graduated in Dentistry from the University of the Sacred Heart (2001) Bauru-SP. Specialization in Dental Prosthetics from FOB - USP, Master's degree in Dental Clinics at PUC Minas, emphasis on Dental Prosthetics. PhD in Bioengineering, UFMG. Adjunct Professor at the School of Dentistry of the Federal University of the Jequitinhonha and Mucuri Valleys, in the area of Dentistry (2011-present). Substitute professor (2002-2004 and 2007-2008) and volunteer (2005-2007 and 2009-2010) at the Department of Dentistry / UFVJM. Vice-head of the Department of Dentistry / UFVJM (2011-2011) and Vice-coordinator of the dentistry course FCBS / UFVJM (2013 - 04/2014). Member of the Board of the Dentistry Course/UFVJM (2014-2016). Permanent Professor of the Postgraduate Program in Dentistry/UFVJM (2011 - 04/2014) CPPD Member (2016-2018) Head of the Dentistry Department UFVJM (2017-2019) CNPq productivity scholarship holder (2009-2010). Vice-director FCBS/UFVJM (Jan. 2019- Jan. 2023. Director FCBS (2023-26) Supervision of Scientific Initiation work and Research Projects in the areas of Dental Prosthetics, Dentistry and Dental Materials, involving the Research Lines: Integrated Dental Clinic, Biological Restorations and Mechanical, Biological and Physicochemical Properties of Restorative Materials.

Adriana Maria Botelho, Universidade Federal dos Vales do Jequitinhonha e Mucuri

Graduated in Dentistry from the Federal School of Dentistry of Diamantina - FAFEOD (1983-1986), current UFVJM (Federal University of Jequitinhonha and Mucuri Valleys), Master in Dentistry, area of concentration Dentistry from the School of Dentistry of Bauru - USP (1996) and PhD in Dentistry, area of concentration Dentistry from the School of Dentistry of Bauru - USP (1999). She is currently a Full Professor in the Department of Dentistry at the Federal University of Jequitinhonha and Mucuri Valleys - Diamantina, M.G. Experience in the area of Dentistry, with an emphasis on Dentistry, working mainly on the following topics: dental materials, restorations and biological pins and clinical hypnosis.

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